1. What is a mole? ~Rayner - raynerc9953
The mole is a unit of measurement used in chemistry to express amounts of a chemical substance, equal to about 6.02214×1023 molecules of that substance. Reference: http://en.wikipedia.org/wiki/Mole_(unit)
2. What is molar mass? Molar mass is the weight of one mole (or 6.02 x 1023 molecules) of any chemical compounds. Molar masses of common chemical compounds that you might find in the chemistry laboratory can range between 18 grams/mole for compounds like water to hundreds of grams per mole for more complex chemical compounds. The lightest possible chemical that one can have under normal conditions is hydrogen gas, or H2. There is no limit to how heavy a chemical compound can be - it is not uncommon for macromolecules (large organic or bioorganic compounds such as DNA) to weigh thousands of grams per mole. Reference: http://misterguch.brinkster.net/molarmass.html
By Wenjie
3. What is Amount of Substance and what is the mole? -Cheung Chun Man (:
Amount of Substance Amount of substance, symbol n, is a quantity that measures the size of an ensemble of entities. It appears in thermodynamic relations, such as the ideal gas law, and in stoichiometric relations between reacting molecules, as in the Law of Multiple Proportions.
It is sometimes referred to as chemical amount.
The Mole The mole, with symbol mol, is the SI unit for the quantity amount of substance. It is currently defined as follows:
The mole is that amount of substance that contains the same number of elementary entities as there are atoms in 12 g of carbon 12. When the mole is used, the entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified groups of such particles.
Answer:
to express amounts of a chemical substance- Elijah
permalink
5.What is a mole?
A mole is a unit of measurement. Like all units, a mole has to be based on something reproducible. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. That number of particles is Avogadro's Number, which is roughly 6.02x1023. A mole of carbon atoms is 6.02x1023 carbon atoms. A mole of chemistry teachers is 6.02x1023 chemistry teachers. It's a lot easier to write the word 'mole' than to write '6.02x1023' anytime you want to refer to a large number of things! - Ian http://chemistry.about.com/cs/generalchemistry/f/blmole.htm
The mole is a unit of measurement used in chemistry to express amounts of a chemical substance, equal to about 6.02214×1023 molecules of that substance.
Reference: http://en.wikipedia.org/wiki/Mole_(unit)
2. What is molar mass?
Molar mass is the weight of one mole (or 6.02 x 1023 molecules) of any chemical compounds. Molar masses of common chemical compounds that you might find in the chemistry laboratory can range between 18 grams/mole for compounds like water to hundreds of grams per mole for more complex chemical compounds.
The lightest possible chemical that one can have under normal conditions is hydrogen gas, or H2. There is no limit to how heavy a chemical compound can be - it is not uncommon for macromolecules (large organic or bioorganic compounds such as DNA) to weigh thousands of grams per mole.
Reference:
http://misterguch.brinkster.net/molarmass.html
By Wenjie
3. What is Amount of Substance and what is the mole? -Cheung Chun Man (:
Amount of Substance
Amount of substance, symbol n, is a quantity that measures the size of an ensemble of entities. It appears in thermodynamic relations, such as the ideal gas law, and in stoichiometric relations between reacting molecules, as in the Law of Multiple Proportions.
It is sometimes referred to as chemical amount.
The Mole
The mole, with symbol mol, is the SI unit for the quantity amount of substance. It is currently defined as follows:
4.
What is 1 mole?
Answer:
to express amounts of a chemical substance- Elijah
5.What is a mole?
A mole is a unit of measurement.
Like all units, a mole has to be based on something reproducible. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. That number of particles is Avogadro's Number, which is roughly 6.02x1023. A mole of carbon atoms is 6.02x1023 carbon atoms. A mole of chemistry teachers is 6.02x1023 chemistry teachers. It's a lot easier to write the word 'mole' than to write '6.02x1023' anytime you want to refer to a large number of things! - Ian
http://chemistry.about.com/cs/generalchemistry/f/blmole.htm